diff --git a/pom.xml b/pom.xml
index c8131e68ee036..c2c10d1d51ad7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -100,6 +100,8 @@ flexible messaging model and an intuitive client API.</description>
     <module>docker</module>
     <module>tests</module>
     <module>pulsar-log4j2-appender</module>
+    <!-- functions related modules -->
+    <module>pulsar-functions</module>
   </modules>
 
   <issueManagement>
diff --git a/pulsar-functions/pom.xml b/pulsar-functions/pom.xml
new file mode 100644
index 0000000000000..f6bc9a5b3e583
--- /dev/null
+++ b/pulsar-functions/pom.xml
@@ -0,0 +1,53 @@
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>org.apache.pulsar</groupId>
+    <artifactId>pulsar</artifactId>
+    <version>1.22.0-incubating-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>pulsar-functions</artifactId>
+  <name>Pulsar Functions</name>
+
+  <dependencies>
+    <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>pulsar-common</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>pulsar-client-original</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+</project>
diff --git a/pulsar-functions/src/main/java/org/apache/pulsar/functions/api/package-info.java b/pulsar-functions/src/main/java/org/apache/pulsar/functions/api/package-info.java
new file mode 100644
index 0000000000000..fc3a47df0ddc7
--- /dev/null
+++ b/pulsar-functions/src/main/java/org/apache/pulsar/functions/api/package-info.java
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Provides a simple model for enabling lightweight computation on Apache Pulsar.
+ */
+package org.apache.pulsar.functions.api;
\ No newline at end of file
diff --git a/pulsar-functions/src/main/java/org/apache/pulsar/functions/package-info.java b/pulsar-functions/src/main/java/org/apache/pulsar/functions/package-info.java
new file mode 100644
index 0000000000000..adc4879f6f755
--- /dev/null
+++ b/pulsar-functions/src/main/java/org/apache/pulsar/functions/package-info.java
@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * <i>Pulsar Functions</i> enables lightweight computation in Apache Pulsar.
+ */
+package org.apache.pulsar.functions;
\ No newline at end of file